main: Handle options

Missing: -h, -V, and -?

3 files changed, 101 insertions, 15 deletions

diff --git a/TODO b/TODO
index 50f4036..fb3fa82 100644
--- a/TODO
+++ b/TODO
@@ -1,2 +1 @@
-Add option handling
 I18n?
diff --git a/configure.ac b/configure.ac
index c2a4411..afb70ab 100644
--- a/configure.ac
+++ b/configure.ac
@@ -45,6 +45,8 @@ AC_CHECK_FUNCS(
 for func in log10 ceil lrint; do
 	AC_SEARCH_LIBS([${func}], [m], [], [funcs_missing=true])
 done
+AC_CHECK_FUNCS([getopt_long], [],
+	[AC_CHECK_FUNCS([getopt], [], [funcs_missing=true])])
 if ${funcs_missing}; then
 	AC_MSG_ERROR([required functions are missing])
 fi
diff --git a/src/main.c b/src/main.c
index 1201330..94fed74 100644
--- a/src/main.c
+++ b/src/main.c
@@ -22,45 +22,130 @@
 #include "opk.h"
 #include "ustar.h"
 
+#include "config.h"
+
+#ifdef HAVE_GETOPT_LONG
+#include <getopt.h>
+#else
+#include <unistd.h>
+#endif
+
+const char *_optstring = "I:fchV";
+#ifdef HAVE_GETOPT_LONG
+struct option _longopts[] = {
+	{
+		.name    = "info",
+		.has_arg = 1,
+		.flag    = NULL,
+		.val     = 'I',
+	},
+	{
+		.name    = "control",
+		.has_arg = 0,
+		.flag    = NULL,
+		.val     = 'f',
+	},
+	{
+		.name    = "contents",
+		.has_arg = 0,
+		.flag    = NULL,
+		.val     = 'c',
+	},
+	{
+		.name    = "help",
+		.has_arg = 0,
+		.flag    = NULL,
+		.val     = 'h',
+	},
+	{
+		.name    = "version",
+		.has_arg = 0,
+		.flag    = NULL,
+		.val     = 'V',
+	},
+};
+#endif
+
 int
 main(int argc, char *argv[])
 {
 	struct opkg_opk_ustar_seek_name *control_files;
+	int                              list_members;
+	int                              opt;
 	struct opkg_opk_opk             *opk;
 
 	control_files = NULL;
-	if (opkg_opk_ustar_add_seek_name(&control_files, "control") !=
-			OPKG_OPK_OK) {
-		goto error0;
-	}
-	if (opkg_opk_ustar_add_seek_name(&control_files, "md5sums") !=
-			OPKG_OPK_OK) {
-		goto error0;
+	list_members  = 0;
+#ifdef HAVE_GETOPT_LONG
+	while ((opt = getopt_long(argc, argv, _optstring, _longopts, NULL))
+			!= -1) {
+#else
+	while ((opt = getopt(argc, argv, _optstring)) != -1) {
+#endif
+		switch(opt) {
+			case 'I':
+				if (opkg_opk_ustar_add_seek_name(&control_files,
+							optarg) !=
+						OPKG_OPK_OK) {
+					goto error0;
+				}
+				break;
+			case 'f':
+				if (opkg_opk_ustar_add_seek_name(&control_files,
+							"control") !=
+						OPKG_OPK_OK) {
+					goto error0;
+				}
+				break;
+			case 'c':
+				list_members = 1;
+				break;
+			case 'h':
+				/* TODO */
+				break;
+			case 'V':
+				/* TODO */
+				break;
+			default:
+				/* TODO */
+				break;
+		}
 	}
+	argc -= optind;
+	argv += optind;
 
 	/* Initialize outer archive. */
-	opk = opkg_opk_opk_init(argv[1]);
+	opk = opkg_opk_opk_init(argv[0]);
 	if (opk == NULL) {
 		goto error0;
 	}
 
 	/* Read control file. */
-	if (opkg_opk_opk_read_control(opk, control_files) != OPKG_OPK_OK) {
-		goto error1;
+	if (control_files != NULL) {
+		if (opkg_opk_opk_read_control(opk, control_files) !=
+				OPKG_OPK_OK) {
+			goto error1;
+		}
 	}
 
 	/* List data files. */
-	if (opkg_opk_opk_list_members(opk) != OPKG_OPK_OK) {
-		goto error1;
+	if (list_members == 1) {
+		if (opkg_opk_opk_list_members(opk) != OPKG_OPK_OK) {
+			goto error1;
+		}
 	}
 
 	opkg_opk_opk_free(opk);
-	opkg_opk_ustar_free_seek_names(control_files);
+	if (control_files != NULL) {
+		opkg_opk_ustar_free_seek_names(control_files);
+	}
 	return EXIT_SUCCESS;
 
  error1:
 	opkg_opk_opk_free(opk);
  error0:
-	opkg_opk_ustar_free_seek_names(control_files);
+	if (control_files != NULL) {
+		opkg_opk_ustar_free_seek_names(control_files);
+	}
 	return EXIT_FAILURE;
 }